adding KI Code for FileChooser PDF

.idea/encodings.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>

src/main/java/domain/FileManager.java

@@ -1,4 +1,25 @@
 package domain;
 
+import javax.swing.*;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import java.io.File;
+
 public class FileManager {
-}
+
+    public void loadFile() {
+        JFileChooser fileChooser = new JFileChooser();
+        fileChooser.setFileFilter(new FileNameExtensionFilter("PDF Files", "pdf"));
+
+        int result = fileChooser.showOpenDialog(null);
+
+        if (result == JFileChooser.APPROVE_OPTION) {
+            File selectedFile = fileChooser.getSelectedFile();
+            System.out.println("Ausgewählte Datei: " + selectedFile.getAbsolutePath());
+            // Hier kannst du die Datei weiterverarbeiten
+        } else {
+            System.out.println("Dateiauswahl abgebrochen.");
+        }
+    }
+
+    public void saveFile(){}
+}

src/main/java/tui/Main.java

@@ -1,4 +1,10 @@
 package tui;
 
+import java.util.Scanner;
+
 public class Main {
+
+    public static void main(String[]args){
+        TUI tui = new TUI();
+    }
 }

src/main/java/tui/TUI.java

@@ -1,4 +1,30 @@
 package tui;
 
+import domain.FileManager;
+
+import java.util.Scanner;
+
 public class TUI {
+
+    public TUI(){
+        tui();
+    }
+
+    public void tui() {
+        Scanner scan = new Scanner(System.in);
+        int option = scan.nextInt();
+
+        switch (option) {
+            case (0):
+                //Load File
+                FileManager fileManager = new FileManager();
+                fileManager.loadFile();
+            case (1):
+                //Save File
+            case (2):
+                //Show Picture
+            case (3):
+                //Exit
+        }
+    }
 }